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Agilent E6474A Wireless Network Optimization Platform for GSM, GPRS and EDGEData Sheet

Agilent Technologies

The Agilent Technologies E6474A Network Optimization Platform is a scalable, integrated, air interface measurement system. This system is used to support integration and maintenance of networks, obtaining comprehensive call performance and quantifying the end-users experience for both voice and data. The system includes extensive GSM, GPRS and EDGE measurements as described in this document. Depending on the selected hardware options, the E6474A system can make measurements on E-GSM900, GSM850, DCS1800, PCS1900, dual-band GSM/PCS1900 or dual-band GSM/DCS networks. A PC interfaces to a maximum of four test mobile phones (or two phones for simultaneous data and trace measurements). System software controls the phones to make and record userselected GPRS and GSM measurements and phone messaging. GSM/GPRS measurements from Sagem's range of test mobiles and Motorola's T720i / T280i are supported on the E6474A platform. GSM, GPRS, and EDGE measurements are available from the Nokia 6230 test mobile. The Agilent GSM digital receiver can be used in conjunction with the E6474A allowing correlation of RF measurements and phone measurements. A GPS receiver, which is integral to the Agilent receivers, used to obtain positioning information that is collated with the measurement results. The system can also be configured for use with a pentablet computer for indoor measurements without GPS. Logged data can be exported to mapping software for analysis.

About this document GSM, GPRS, and EDGE overview

This document gives detailed information on the features accessible on the E6474A GSM, GPRS, and EDGE drive test system and associated software and hardware options. System software The E6474A system software is a user-friendly Microsoft Windows-based application designed to reside on a laptop. It is scalable and provides flexible measurement capabilities. Through a selection of licensing options it is possible to configure the software to provide GSM, GPRS, and EDGE phone-based measurements, GSM receiverbased measurements and data measurements. With the multiple phone measurements license it is possible for the system to control up to four test mobile phones simultaneously (two for simultaneous data and trace). It is possible to expand your system at any time by adding software licenses or hardware to the base product. Multiple measurements can be made simultaneously. All the measurements can be displayed in real-time and logged to a database. Indoor measurement capability, without the need for GPS navigation, can be added by selecting the indoor measurements software license option. Refer to the E6474A Wireless Network Optimization Platform configuration guide, literature number 5988-2396EN, for detailed option information.


E6474A Wireless Network E6474A-200 GSM phone measurement software license Optimization Platform E6474A-210 GSM receiver/ scanner measurement software license GSM, GPRS, and EDGE options E6474A-220 GSM receiver/scanner and phone measurement software license E6474A-230 GSM TechTool phone measurement software license E6474A-250 GAIT phone measurement license E6474A-270 GSM receiver/scanner and GAIT phone measurement software license E6474A-600 GSM/GPRS phone measurement software license E6474A-620 Combined GSM receiver & GSM/GPRS phone measurement software license E6474A-635 GPRS to EDGE phone measurement upgrade software license E6474A-010 Multiple test mobile software license E6474A-030 Indoor measurement capability software license E6474A-700 Data measurement software license E6474A-710 Data measurement server software license E6474A-740 Wireless Application Measurement Software (WAMS) software license E6474A-259 GSM850 System Kit E6474A-609 GSM/GPRS System Kit The system software has phone measurement ability for a single test mobile phone, enabled with software license E6474-200 or -220 (for GSM only), with software license E6474A-600 or -620 (for GSM and GPRS), or with the addition of E6474A-635 upgrade (for GSM, GPRS, and EDGE). If multiple phone control is required for benchmarking with two or more networks, E6474A-010, multiple phone control software license, must also be ordered. A number of different views are available from the view menu to enable the display of measured or calculated data. The views should be arranged within the main window before starting a data collection test, although they can be opened and closed during a test. This section gives details of the views associated with: GSM phone measurements GPRS phone measurements EDGE phone measurements Data measurements Phone message logging GSM receiver measurements Common platform measurement features will be discussed in a subsequent section.

Measurement software

GSM/GPRS measurement views


GSM phone measurements

The following views are available for all supported frequencies using either the GSM or the GPRS tracking phones. GSM Properties setup GSM Channel Change Monitor view GSM Signal view GSM Signal Parameters view Neighboring Cells view AMR Views (Motorola and Nokia mobiles) Forcing Functions (Sagem only) These views display subsets of the following GSM parameters:GSM Parameter Mobile State Channel BSIC MCC LAC Cell ID MNC TCH Description Displays mobiles service state (No Service, Dedicated or Idle) Displays the broadcast channel in use on the serving cell. Indicates the serving cell base station identity code (BSIC). Displays the Mobile Country Code Displays the Location Area Code. This value is displayed in decimal units. Displays a unique hexadecimal number assigned to the serving cell. This value is displayed in decimal units. Displays the Mobile Network Code. Displays the unique TCH channel number(s) being used by the phone during a call. When hopping is used during a call, this text box is empty, and all TCH channels display in the Hopping list. Indicates the power being used for transmission by the phone. This is a value from 0-31. Displays the service signal strength (dBm) measured over a full set of traffic and SACCH frames. Displays the service signal strength (dBm) measured over a sub set of 4 SACCH and 8 SID (Silence Descriptor) frames. Displays the service signal quality. This will be a value from 0-7 measured over a full set of traffic and SACCH frames. Displays the service signal quality. This will be a value from 0-7 measured over a full set of traffic and SACCH frames. Displays the discontinuous transmission state. This can be ON or OFF Frame Erasure Rate. The percentage of lost or bad speech frames. This field is not displayed if the attached mobile does not support frame erasure measurements. The FER range is 0 to 100%. Note: Motorola phones only support FER if AMR mode is enabled. Displays the timing advance being used during a call. This is given in bit periods and can have a value from 0-63. Displays the timeslot being used by the network during a call. This can be a value from 0-7. Displays the logical channel type used Displays the actual and network assigned downlink signaling flag counter. Radio Link Timeout Counter. The initial display being the maximum value as defined by the network. This displays the actual and maximum values. Displays type of frequency hopping used Displays the Mobile Allocation Index Offset value Displays the Hopping Sequence Number Display number of hops made during a call This list contains the available hopping channels for the GSM network. The list is passed from the network to the phone.4

Tx Level RxLev (F) RxLev (S) RxQual (F) RxQual (S) DTX FER

TA TSlot Type of channel DSF RLT

Hopping MAIO HSN Hops Hopping List

C1 C2 C/I

Mobile reported path loss criterion parameter, used for cell selection and reselection Reselection criterion parameter. C2 is a function of C1 and is used in cell reselection only Carrier to Interferer ratio

A custom view is also available enabling users to constuct multiple views displaying user selected parameters. Up to 40 parameters can be selected per custom view. The control and measurements covered by each of the views are detailed below: GSM Properties setup The data collection options are selected using the GSM Properties dialog box and are required to be configured for each mobile connected to the system. It contains multiple tabbed pages, which enable the user to select data collection options (properties) for the mobile device. GSM Channel Change Monitor view The GSM Channel Change Monitor view displays the signal parameters before and after a handover. The Handover Form and Cause, Traffic Channels 1 and 2, Power Class, and the BCCH for neighbors 1 through 6 are displayed, as detailed below: Form Cause (Handover Causes) LAC C1 C2 BCCH BSIC Cell ID DTX RxLev (full) RxQual (full) Hop MAIO HSN Time Slot T Ch1 T Ch2 TxPower TA PWRC FER

Note: This view is available with Sagem measurements only.


GSM Signal parameters view The following measurements are displayed in this view: Cell LAI TCH Hopping list RsLev full RxLev sub DTX RxQual full C1 C2 DSF (actual\max) RLT (actual\max) TxPower Timing Advance

The user can optionally select Channel Number or Cellsite Name for display. A cellsite database is required in order to display cellsite names. Note: This view is only applicable to the Sagem and Motorola T720 mobiles. GSM Signal view The following measurements are displayed in this view: Mobile State Mobile Measurements Serving Cell: TCH BCCH Tx Level BSIC RxLev (F) MCC RxLev (S) LAC RxQual (F) Cell ID RxQual (S) MNC DTX FER TA TSlot Type of channel DSF RLT Agg C/I1

Frequency Hopping: Hopping MAIO HSN Hops Hopping List C/I Hopping List: ARFCN List RxLEV List C/I List1

1. Not available using the Motorola T720 phone.